package com.app;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ContentUris;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;

import com.app.util.Utils;
import com.app.util.Utils_Log;

import java.io.File;

/**
 * Created by matengfei on 15/8/3.
 */
public class MyPhotoAlbum {


    private String TAG = MyPhotoAlbum.class.getSimpleName();

    private final static int CODE_PHOTO_ALBUM_KITKAT = 1003;
    private final static int CODE_PHOTO_ALBUM_NEW = 1004;

    private Activity activity;
    private Callback callback ;
    private String filename = "";



    public static abstract class Callback {
        public void OnFinal(String filename){};

    }

    public void SetCallback(Callback callback){
        this.callback = callback;
    }


    public void start(Activity activity ){
        this.activity = activity;


        ///*
        // 4.4以上图片选择不同，使用老方法将崩溃
        final boolean isKitKat  = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        if( isKitKat == false ){

            // 调用系统相册
            Intent intentFromGallery = new Intent();
            intentFromGallery.setType("image/*"); // 设置文件类型
            intentFromGallery
                    .setAction(Intent.ACTION_GET_CONTENT);
            activity.startActivityForResult(intentFromGallery,
                    CODE_PHOTO_ALBUM_NEW);

        }
        else{

            Intent intent=new Intent(Intent.ACTION_GET_CONTENT);//ACTION_OPEN_DOCUMENT
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            intent.setType("image/jpeg");
            activity.startActivityForResult(intent, CODE_PHOTO_ALBUM_KITKAT);
        }
        //*/


    }




    public String OnActivityResult(int requestCode, int resultCode, Intent data) {

        String path = "";

        if (resultCode == Activity.RESULT_OK) {

            if (requestCode == CODE_PHOTO_ALBUM_KITKAT) {
                Uri selectedImage = data.getData();
                path = getPath(activity, selectedImage); // http://blog.csdn.net/tempersitu/article/details/20557383
            } else if (requestCode == CODE_PHOTO_ALBUM_NEW) {
                Uri selectedImage = data.getData();
                path = getPath(activity, selectedImage);
            }


        }
        filename = path;

        Utils_Log.e(TAG, "image path: " + path);

        if( callback != null) {
            callback.OnFinal(path);

        }


        return path;

    }


    public byte[] getContent(){
        if(!filename.isEmpty()){

            byte[] bytes = Utils.readFile2Bytes(filename);
            return bytes;

        }

        return new byte[0];
    }




    //////////////////////////////////////////////////////////////////////////////
    @SuppressLint("NewApi")
    private String getPath(final Context context, final Uri uri) {

        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

        // DocumentProvider
        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }

                // TODO handle non-primary volumes
            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {

                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(
                        Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];

                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }

                final String selection = "_id=?";
                final String[] selectionArgs = new String[] {
                        split[1]
                };

                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {

            // Return the remote address
            if (isGooglePhotosUri(uri))
                return uri.getLastPathSegment();

            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }

        return null;
    }


    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context The context.
     * @param uri The Uri to query.
     * @param selection (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     */
    private String getDataColumn(Context context, Uri uri, String selection,
                                 String[] selectionArgs) {

        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {
                column
        };

        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                    null);
            if (cursor != null && cursor.moveToFirst()) {
                final int index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }


    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is Google Photos.
     */
    public static boolean isGooglePhotosUri(Uri uri) {
        return "com.google.android.apps.photos.content".equals(uri.getAuthority());
    }


////////////////////////////////////////////////////////////////////////////////////



}
